M3A78-CM or 7750BE....Whose at Fault? (Working now but.....)

[jedihobbit]

Covering all my bases as I don't have much time to make a decision to RMA one or the other.........

Here is the skinny that I need suggestions for..........

Picked up an open box M3A78-CM from the egg. Also ordered a 7750BE and PC-3800 g. skill to run in a build.

The board arrived first so I decided to play with it using a Brisbane 4000+ and OCZ PC-6400. Worked well and even ended up wih a stable 3.0GHz overclock.

Anyway stuck the 7750 in along with the memory and it will not boot. Pulled it out and put the 4000+ back in and up we go. It even work with the new g. skill. Powered up and powered down several times and it worked.

Placed the 7750 back in and still no joy............

and yes I DID clear CMOS before starting! :laugh:

<EDIT: My bad....when I stated it wouldn't boot, I ment nothing came up no video, "load beep", nothing. No access to bios as there is nothing.

 

[o1die]

The 7750 requires bios version 1003 to work on that board. Try posting with the 4000 and see what bios version is listed at the top of the screen. You may have to flash the bios.

 

[jedihobbit]

Running 1201

 

[o1die]

I repeat, try the 1003 bios version. Sometimes newer or beta versions have problems.

 

[jedihobbit]

New 7750 today and installed.........NO JOY!!!!!!!!!! :disgust: :brokenheart: How is it they promote this board to handle AM2+ and AM3 and it will not work with the 7750???

Am I missing something??? :thumbsdown:

Okay o1die I remount the 4000+ and see what I can do about the 1003 bios (along with everything else!).

 

[jedihobbit]

Okay went back to the 1003 and tried the new cpu and no joy!

 

[jedihobbit]

Okay here's one for o1die but it is weird (or maybe not) it has booted with the 1003 bios and OCZ PC-6400 memory I have. It seems I may have goofed in ordering the g. skill F2-8500CL5D-2GBPK as it will not boot with it.

Then again this is a new proc for me and will have to receive some suggestions for settings....especially if I want to get the g. skill to work.

 

[jedihobbit]

Playing around with oc'ing and the best 8M run of SPi I could do is x16 @ 204 = 3.26GHz - 553-2T - 1.50V..........however will not even start Prime. Actually have dropped all the way back to 3.18GHz (x15 @ 212) to get anything over 10 minutes. Have notice something really strange.......in cpuz I've seen the vcore drop to 1.23V and the multi will drop to6.75!!